In the US, the maximum speed on an interstate highway is 70. Until recently, there were a couple of stretches of highway that were limitless.
Look for a big sign that has two numbers on it with the these two words on top of them, SPEED LIMIT.
The highest speed limit is no speed limit, which does exist in some parts of some countries.
the state with the highest speed limit is Texas
there are places where there is NO speed limit.
Jamaica
The highest speed limit on the Interstates is 75 MPH.
The highest speed limit I know of on an Interstate highway in the U.S. is 75 MPH, but that varies.
The universal speed limit for material objects is c : the speed of light in a vacuum.
India's highest speed limit is 180km/h or 120mph in the Bangalore's Airport expressway
A yellow diamond-shaped sign with a black number inside indicates the highest safe speed limit in that area.
85 Miles in Texas east of Austin Texas
Fasten that safety belt before moving the vehicle; look both ways before pulling out from a stop; obey speed limit signs ... "speed limit" is not the speed you HAVE to go, rather the highest speed allowed for that road in that area.
Some of the western US states used to have no upper speed limits, but they no longer do. In order to accept Federal Highway Funds they had to come into compliance and establish upper limits to the speed allowed on their highways.
70 m.p.h. I can't quote the chapter and verse of the law, but I live in Georgia (U.S.A.) and 70 is the highest speed limit I see on our highways.